Blackstonia grandiflora is a delicate herbaceous annual, native to coastal regions of the Mediterranean. It features bright yellow flowers and thrives in sandy, well-drai
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
75% intensity
Prefers at least 6 hours of direct sunlight daily.
Moderate
50% intensity
Allow soil to dry slightly between waterings; ensure excellent drainage.
Sandy, Well-drained
50% intensity
Moderate
50% intensity
Prefers average room temperatures during the growing season; cooler in winter.
Low
25% intensity
Avoid heavy feeding; a light, balanced fertilizer in spring is sufficient.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water consistently when the top 2-3 cm of soil feels dry. Ensure excellent drainage, as Blackstonia grandiflora dislikes waterlogged conditions.
Reduce watering significantly during its dormant period in winter, allowing the soil to dry out more between applications to prevent root rot.
Pruning is typically minimal. Deadhead spent flowers to encourage more blooms and maintain a tidy appearance. Remove any yellowing or dead foliage as needed throughout the growing season.
Avoid heavy pruning, as it may hinder natural growth and flowering.
Propagation is best achieved through seeds sown in autumn or early spring. Cold stratification can improve germination rates.
Division of established clumps in early spring is also an option, but care must be taken not to disturb the root system excessively.
Repot Blackstonia grandiflora only when necessary, ideally in early spring before new growth begins. Use a well-draining potting mix, such as a cactus or succulent blend, mixed with some compost.
Choose a pot that is only slightly larger than the current one.
Identify plants like this with ePlant AI
Snap a photo to get care tips and match similar species on the go.
Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Blackstonia Grandiflora (Blackstonia grandiflora)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Gentianales |
| Family | Gentianaceae |
| Genus | Blackstonia |
| Species | Blackstonia grandiflora |
Similar in genus Blackstonia
Answers based on plant encyclopedia data
